diff --git a/tests/test_responsetypes.py b/tests/test_responsetypes.py
index 15a7ea680..16ce36233 100644
--- a/tests/test_responsetypes.py
+++ b/tests/test_responsetypes.py
@@ -120,8 +120,15 @@ class ResponseTypesTest(unittest.TestCase):
                                                        'Content-Type': ['text/html']})}, HtmlResponse),
             ({'body': b'Some plain text', 'headers': Headers({'Content-Type': 'application/octet-stream'})},
              TextResponse),
-            ({'url': b'http://www.example.com/page/file.html', 'headers': Headers({'Content-Type': 'application/octet-stream'})},
-             TextResponse),
+            ({'url': b'http://www.example.com/page/file.html',
+              'headers': Headers({'Content-Type': 'application/octet-stream'})}, TextResponse),
+            ({'url': 'http://www.example.com/item/file.xml',
+              'headers': Headers({'Content-Type': 'application/octet-stream'})}, TextResponse),
+            ({'url': 'http://www.example.com/item/file.html',
+              'headers': Headers({'Content-Type': 'application/octet-stream'})}, TextResponse),
+            ({'url': 'http://www.example.com/item/file.xml',
+              'headers': Headers({'Content-Disposition': ['attachment; filename="data.xml.gz"'],
+                                  'Content-Type': 'application/octet-stream'})}, TextResponse),
             ({'body': b'\x0c\x1b'}, TextResponse),
             ({'body': b'this is not <html>'}, TextResponse),
             ({'body': b'this is not <?xml'}, TextResponse),